ABSTRACT
In this paper, we have proposed a comparative study for path loss prediction of mobile radio waves over an irregular terrain scenario based on the uniform theory of diffraction-physical optics (UTD-PO) and Fresnel-Kirchhoff knife edge diffraction theory (FKE). An irregular terrain is ideally considered as a series of obstacles or hills of uneven height and spacing on which the receiving point or mobile land unit R x moves. Between the transmitting T x and the receiving R x points, there are series of obstacles that are approximated as knife-edge obstacles to compute path loss for UTD-PO and FKE approach. The comparative results show that when the number of obstacles increases in the terrain between the point of transmission and the points of reception, the predicted path loss of the FKE approach gives inferior results in comparison to the path loss of the measurement data and the predicted path loss of the UTD-PO approach. Also, the data analysis of these approaches shows that the mean error of path loss obtained for the UTD-PO approach is smaller as compared to the mean error of path loss for FKE approach.
